Dampening agent for resin bonded grinding wheels

Abstract

The present invention relates to abrasive articles such as grinding wheels which employ organic binders and are improved by the use of certain oils or with the use of long chain aliphalic monhydroxy alcohols or long chain alkylated phenols alone or mixed with particular oils as dust depressants or dampening agents used with the conventional plasticizers. These dampening agents prevent "balling", minimize dusting and produce a more durable abrasive article.

I claim: 
     
       1. A process of making a grinding wheel from a mixture including abrasive grains, fillers and an uncured powdered resin bond, comprising blending said mixture, dampening the mixture during the blending step with a dampening agent selected from the group consisting of monohydroxy aliphatic alcohol with a carbon chain length of 6 to 18 carbon atoms and phenol substituted with an alkyl chain of 6 to 18 carbon atoms; said agent being essentially a non-solvent for the resin at room temperature but which may become a solvent therefor at temperatures above about 45° C.; pressing the blended mixture into a wheel form; and curing the resin with heat above 45° C. 
     
     
       2. The process of claim 1 wherein the dampening agent is selected from the group consisting of n-decyl alcohol, n-dodecyl alcohol, 2-ethyl hexanol, tridecyl alcohol, octadecyl alcohol, p-n-decyl phenol, p-n-dodecyl phenol and p-n-octadecylphenol and mixtures thereof. 
     
     
       3. A resin bonded grinding wheel, comprising a molded mixture of abrasive, thermosetting resin, plasticizer and a dampening agent wherein said dampening agent is selected from the group consisting of n-decyl alcohol, n-dodecyl alcohol, 2-ethyl hexanol, tridecyl alcohol, octadecyl alcohol, p-n-decyl phenol, p-n-dodecyl phenol and p-n-octadecylphenol and mixtures thereof. 
     
     
       4. A mixture including abrasive grains, powered resin and a dampening agent adapted to be used for making cured resin bonded grinding wheels, comprising a measured quantity of abrasive grains; a measured quantity of powdered resin blended with said grains; and a liquid dampening agent selected from the group consisting of monohydroxy aliphatic alcohol with a carbon chain length of 6 to 18 carbon atoms and phenol substituted with an alkyl chain of 6 to 18 carbon atoms; said agent being essentially a non-solvent for the resin at room temperature but which may become a solvent therefor at temperatures above about 45° C. 
     
     
       5. A mixture including abrasive grains, powdered resin and a dampening agent adapted to be used for making cured resin bonded grinding wheels, comprising a measured quantity of abrasive grains; a measured quantity of powdered resin blended with said grains; and a liquid dampening agent selected from the group consisting of n-decyl alcohol, n-dodecyl alcohol, 2-ethyl hexanol, tridecyl alcohol, octadecyl alcohol, p-n-decyl phenol, p-n-dodecyl phenol and p-n-octadecylphenol and mixtures thereof; said agent being essentially a non-solvent for the resin at room temperature but which may become a solvent therefor at temperatures above about 45° C.